here's what I would do to analyze this first:
- vmstat 1
- iostat -k -x 3
- look into system logs, maybe something actually happened there...
- look at the process list. find if some of Pg processes are in D state
- strace -f -v <PID of the "hanging" writer process>
2011/11/29 panam <panam@gmx.net>:
> Hi,
>
> as I am importing gigabytes of data and the space on the volume where the
> data dictionary resides just became to small during that process, I resized
> it dynamically (it is a LVM volume) according to this procedure:
>
http://www.techrepublic.com/blog/opensource/how-to-use-logical-volume-manager-lvm-to-grow-etx4-file-systems-online/3016
> Everything went without any problems and the import continued. Now, it is
> suddenly stuck (pgAdmin shows it as idle (piped connection)) and there is a
> good chance (as estimated from the space used) it just started using one of
> the added LE-Blocks (HDD space that was added to the volume). The db
> imported so far can be accessed just fine.
> So from the postmaster architecture, is there something that would explain
> this behaviour based on the hypothesis that newly added space was used? Any
> chance to revive the import somehow?
>
> Thanks
>
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